Timothy Delahunt

Timothy Delahunt (1956-2006) was an undercover Massachusetts State Police cop who infiltrated the Costello Mob until his death in 2006.

Biography
Timothy Delahunt was born in Boston, Massachusetts to an Irish Catholic family, and he became a trooper of the Massachusetts State Police. Delahunt was assigned to infiltrate Francis Costello's Irish Mob organization, and he became Costello's "muscle". In 2006, Delahunt was mortally wounded in a shootout with the police after Costello's men were sent to attack a meeting between undercover cop Billy Costigan and police captain Oliver C. Queenan. Delahunt died back at Costello's house, and Costello told Costigan that he knew that Delahunt had been undercover the entire time.